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Engine-Codes – GMC – P0332 2016 GMC Sierra

P0332 2016 GMC Sierra Code - Knock Sensor Circuit Low Voltage Bank 2

Quick Answer

The P0332 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Knock Sensor Circuit Low Voltage Bank 2. Common causes include Faulty knock sensor, Wiring harness issues or shorts, Corrosion or poor connections in the sensor circuit. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0332 2016 GMC Sierra indicates Knock Sensor Circuit Low Voltage Bank 2.
Common causes
Common causes include Faulty knock sensor, Wiring harness issues or shorts, Corrosion or poor connections in the sensor circuit.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0332 2016 GMC Sierra Description

The P0332 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Knock Sensor Circuit Low Voltage Bank 2. The knock sensor is a crucial component in the engine management system that detects abnormal combustion, commonly known as engine knock or detonation. When the knock sensor detects these irregularities, it sends a signal to the engine control module (ECM) to adjust the ignition timing and prevent potential engine damage.

OBDII Code P0332 2016 GMC Sierra - Knock Sensor Circuit Low Voltage Bank 2
P0332 2016 GMC Sierra Code - Knock Sensor Circuit Low Voltage Bank 2

Common Causes of P0332 2016 GMC Sierra

  1. Faulty knock sensor
  2. Wiring harness issues or shorts
  3. Corrosion or poor connections in the sensor circuit
  4. ECM malfunction or software glitches
  5. Engine mechanical problems causing false knock sensor readings

Symptoms of P0332 2016 GMC Sierra

  1. Engine knocking or pinging noises
  2. Decreased engine performance or acceleration
  3. Poor fuel economy
  4. Illuminated check engine light
  5. Engine misfires

How to Fix P0332 2016 GMC Sierra

  1. Diagnose the issue by using a scan tool to read the DTC and check the knock sensor's voltage readings.
  2. Inspect the wiring harness for any damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the knock sensor's resistance and replace if it is out of specification.
  4. Clear the DTC and reset the ECM to see if the issue persists.
  5. If the problem persists, consider replacing the knock sensor or consulting a professional mechanic for further diagnosis.

Cost to Fix P0332 2016 GMC Sierra

The cost of repairing a Knock Sensor Circuit Low Voltage Bank 2 issue can vary depending on the specific cause of the problem. In general, the cost of a new knock sensor can range from $50 to $200, while the labor cost for installation can range from $100 to $300. Overall, the total repair cost could be anywhere from $150 to $500, including parts and labor. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

What does this mean?

Tech Notes for P0332 2016 GMC Sierra

The P0332 code means that the Knock Sensor is not working properly. Problems with the knock sensor will not cause engine performance problems. Replacing the knock sensor usually takes care of the problem.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0332 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P0332 in a 2016 GMC Sierra?

- Common symptoms include engine knocking or pinging noises, reduced engine performance, and potential illumination of the Check Engine Light.

2. What does the OBDII code P0332 ("Knock Sensor Circuit Low Voltage Bank 2") in a 2016 GMC Sierra indicate?

- This code typically indicates that the knock sensor in bank 2 is detecting a low voltage condition, signaling a potential issue with engine knock detection.

3. What are the possible causes of OBDII code P0332 in a 2016 GMC Sierra?

- Common causes include a faulty knock sensor, wiring issues in the knock sensor circuit, poor electrical connections, or engine mechanical problems causing abnormal vibrations.

4. How can I diagnose the OBDII code P0332 on a 2016 GMC Sierra?

- Diagnosing this code often involves testing the knock sensor's resistance, checking for wiring faults, inspecting electrical connections, and monitoring the sensor's voltage output during engine operation.

5. Can driving with OBDII code P0332 in a 2016 GMC Sierra cause further damage?

- Continuing to drive with this code may lead to increased engine damage due to potential detonation or pre-ignition issues that the knock sensor is designed to detect and prevent.

6. How can I repair OBDII code P0332 in a 2016 GMC Sierra?

- Repairing this code typically involves replacing the faulty knock sensor, repairing any damaged wiring or connections, and ensuring the sensor is properly positioned and functioning correctly.

7. Is it safe to reset or clear the OBDII code P0332 in a 2016 GMC Sierra without fixing the underlying issue?

- It is not recommended to clear the code without addressing the underlying problem, as it may lead to ongoing engine performance issues and potential long-term damage.

8. Can environmental factors trigger OBDII code P0332 in a 2016 GMC Sierra?

- Extreme temperatures, engine overheating, or poor fuel quality can sometimes trigger false readings from the knock sensor, potentially causing the code to set.

9. How much does it usually cost to repair OBDII code P0332 in a 2016 GMC Sierra?

- The cost of repairing this code can vary depending on the specific issue, but it typically ranges from $200 to $500, including parts and labor.

10. How often should the knock sensor be replaced in a 2016 GMC Sierra to prevent OBDII code P0332 from recurring?

- Knock sensors generally have a long lifespan, but it's recommended to inspect and potentially replace them every 100,000 miles or if any issues arise to prevent the recurrence of this code.

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